Help Center> Relational Database Service> Performance White Paper> RDS for PostgreSQL> RDS for PostgreSQL 13 Test Data> Dedicated DB Instances
Updated on 2022-10-31 GMT+08:00
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Dedicated DB Instances

About IOPS

The IOPS supported by RDS for PostgreSQL depends on the I/O performance of Elastic Volume Service (EVS) disks. For details, see Disk Types and Performance in the Elastic Volume Service Service Overview.

Test Data

Table 1 vCPU:Memory = 1:4

vCPUs

Memory (GB)

TPS

QPS

IOPS

2

8

447

8,945

See About IOPS.

4

16

983

19,667

8

32

1,851

37,016

16

64

2,680

53,601

32

128

6,242

124,845

64

256

9,895

197,921
Table 2 vCPU:Memory = 1:8

vCPUs

Memory (GB)

TPS

QPS

IOPS

2

16

524

10,478

See About IOPS.

4

32

1,042

20,832

8

64

2,115

42,300

16

128

3,824

76,485

64

512

10,092

201,858

Test Results

Figure 1 vCPU:Memory = 1:4
Figure 2 vCPU:Memory = 1:8